In the past, certain individuals were able to delay the challenge match if they had a verified injury. In the past, I think you had to be a defending World/Olympic medalist. (Dake did this with Dieringer; I watched Gutches vs Burton at Fargo) Today, I am not sure of the rules, but they are probably similar. I don't think Snyder would qualify for a delay after not medaling last year, but he doesn't need a delay anyway after the recent reinstatement.
And I guess this isn't what you asked, anyway. I just re-read your question. I am not sure of that procedure, but it is too late at this point. My guess is the only way the open runner-up makes Final X is in the case of a drug suspension, which would bump everyone from the open up a place.